        
        .top_nav {
            width: 1170px;
            height: 20px;
            margin: 0 auto;
            padding: 10px;
            background-color: #0e0101fd;
            
        }
        .top_nav div{
            float: left;
            line-height: 20px;
        }
        nav a{
            text-decoration: none;
            color: rgba(197, 195, 191, 0.726);
            display: block;
            padding: 0 10px;
            margin-left: auto;
            margin-right: auto;
            left: 0;
            right: 0;
            
        }
        
        .top_nav.item {
            height: 25px;
            line-height: 25px;
            background-color: #160202;
        }
        
       
        .top_nav a:hover {
            color: white
        }

        .text {

            height: 497.625px;
            border: 1px solid;
            background-color: #50098a;
            text-align: center;
            text-decoration: none;
        }

        .text h1 {
            height: 60px;
            font-size: 100px;
            color: aliceblue;
            margin: 100px;
            text-align: center;

        }

        .text h2 {
            margin: 50px;
            font-size: 30px;
            color: white
        }

        .text button {
            font-size: 20px;
            background-color: rgba(43, 100, 223, 0.966);
            padding: 15px;
            border: 1px 25px solid;
        }

        .text p {
            margin: 20px;
            color: slategray;
        }

        .text a {
            height: 15px;
            color: rgb(136, 135, 133);
            margin: 20px;

        }

        .text a:hover {
            color: white
        }


        .box1 {
            text-align: center;
            text-decoration: none;
        }

        .box1 h1 {
            font-size: 40px;
            margin: 35px;

        }

        .box1 h2 {
            font-size: 15px;
        }

        .box1.content{ 
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
           
        }
        .box1.content.item{
            width: 300px;
            margin: 0 5px;
            
        }
        /* 这个是flex容器 */
        .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }
        .container .item {
            width: 300px;
            margin: 0 15px;
        }